You can change it via config file but it is not exposed in UI. You can navigate to the folder where you have installed "Alert Repository", there is a file called Config.xml here. This lists all the polling frequency.

Please always take a backup of this file before making any changes. Also, you would need to restart the service after you have edited config.xml.

I can not locate a config.xml file on the machine where SQL Monitor is installed - by the way I'm using SQL Monitor which I thought was simply the replacement product for SQL Response - how can I adjust the intervals for SQL Monitor?

Regarding monitoring frequency, though you can change via this config file RedGate.Response.Engine.Alerting.Base.Service.exe.settings.config which is located in C:\\Documents and Settings\\All Users\\Application Data\\Red Gate\\SQL Monitor 2 (or equivalent location) ... I wouldn't recommed it. These schedule have been set up with optimum results in mind for things like performance, data availability etc. Changing the schedule can affect alerts adversely.

Also, would be good to know though that why do you want to change it? Is there any specific problem you are facing?

I'm actually more interested in simply knowing what the intervals are at this point. We are looking to use the information gathered for performance benchmarking, so one major question is, how often is the data gathered? Every 15 minutes is useless for example because it's too large of a gap.

Different data collection has different frequency. It can vary anything from 10 seconds (for pings) to ones a week (for index collection). If you want to know rate of any particular data collection then please ask. I can send you the detail.